Answer: the answer is 129
Step-by-step explanation: 180 subtract by 51 and it will give u 129
Answer:
11 dimes and 9 quarters
Step-by-step explanation:
lets make x quarters and y dimes
Here is the equation we have so far:
x+y=20
BUT it can also be used to determine the values:
0.25x+0.10y=3.35
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0.25x+0.10y=3.35
x+y=20
Im going to solve for quarters first.
Multiply everything by 0.25 on the bottom equation: 0.25x+0.25y=5
Now you have two equations:
0.25x+0.10y=3.35
and 0.25x+0.25y=5
subtract out the 0.25x
.15y=1.65
y=11
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you have 11 dimes.
x+11=20
x=9
You have 9 quarters
Answer:
The lowest whole number ratio of the elements in a compound is called <u><em>the empirical formula.</em></u>
Step-by-step explanation:
A molecular formula consists of the chemical symbols of the constituent elements of a compound followed by numerical subscripts that describe the number of atoms of each element present in the molecule.
Then, the representation of the elements that form a compound and the proportion in which they are found, or the number of atoms that form a molecule is called the chemical formula.
The empirical formula is an expression that represents the simplest proportion in which atoms that form a chemical compound are present. It is then the simplest representation of a compound. Therefore, it is called the minimum formula.
In summary, the empirical formula is a formula that indicates the simplest integer ratio of all atoms in a molecule.
Finally, <u><em>the lowest whole number ratio of the elements in a compound is called the empirical formula.</em></u>
12 in is 1 ft so 35/12 is 2.91 rounded is 3 ft.
Answer:
(4xy)(5x^2yz) = 20x^3y^2z
Step-by-step explanation:
- You need to expand the brackets by multiplying compatible terms together.
- The numerical ones together and algebraic ones of the same variable together as well.
- You may follow the following steps to understand the way it is done.